Urethanes


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Urethanes

A family of plastics used for varnish coatings, foamed insulations, highly durable paints, and rubber goods.
References in periodicals archive ?
The outstanding abrasion resistance of urethane elastomers has led to many important bulk material handling applications.
Sherwin-Williams Protective and Marine Coatings has introduced FluoroKem HS, a high solids, ultra-durable ambient cured fluoropolymer urethane premium performance finish.
It is also important to use non-hydroxyl functional co-solvents in water-based two-component urethane systems, since the primary hydroxyl of the solvent will react much faster than the polyol (Figure 1).
Range of equipment for metering/dispensing plural-component urethane systems.
Tin catalysts for flexible and rigid urethanes include CC-1 (dibutyltin dilaurate), CC-3 (dibutyltin diacetate), and stannous octoate in various solutions including stannous octoate CC-19 urethane foam.
However, shortly after the introduction of coldbox phenolic urethane binders, casting defects described as severely wrinkled surface defects were reported by some users.
* identify and study the reactivity of the structure and morphology of both hard and soft segments in conductive urethanes through DSC, DMA, and GPC, and through atomic force microscopy, transmission and scanning electronic microscopy, and small- and wide-angle X-ray spectroscopy.
This Adiprene K family of one-component urethane systems can provide processing advantages for applications ranging from abrasion-resistant elastomeric coatings to large, higher-hardness components.
Pigments dispersed in six standard vehicles compatible with thermoplastics, unsaturated polyesters, epoxies, urethanes, and other resins.
In contrast, Foster points out, traditional means of increasing lubricity through internally compounded additives would adversely affect key physical properties of urethanes, while external lubricants would diminish with time and use, as well as hinder the adhesive bonding required in many applications.
Polyol Urethane Nobake--This binder is less sensitive to sand and metal temperature and sand is reclaimable, but it is prone to erosion and issolvent-based.